APL UA-S4 should be on your list.
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The best sounding integrated amp and the best sounding amp period is Mastersound. Nothing else comes close. Mastersound Caesar uses the 32B output tubes. I have owned a lot of amplifiers over the years such as Mark Levinson the originals and Madrigal versions, Krell, Audio Research tube and ss, VTL, Manley, Quicksilver and many others. All of those amps sound ordinary after experiencing the Mastersound Caesar.